What Is the Distance Between the Beacon Towers on the Great Wall?

The distance between the beacon towers on the Great Wall was not uniform throughout its entire length. It varied depending on the terrain, the strategic importance of the area, and the visibility conditions. In relatively flat and open areas, where the line of sight was good, the distance could be around 2.5 to 3 kilometers. This allowed for efficient signal transmission through the beacon fire system, as one tower could easily spot the smoke or fire from the adjacent one. However, in mountainous regions or areas with obstructed views, the distance was shorter, usually between 1 and 1.5 kilometers. The closer spacing was necessary to ensure that the signal could be relayed accurately, even in challenging terrains. The layout of the beacon towers was a carefully planned aspect of the Great Wall's defense system, as it enabled rapid communication of threats and coordinated responses, safeguarding the empire from potential invasions.